Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Overall symptoms of tinnitus
RCT	48 people with "annoying tinnitus" In review	Proportion of people with an improvement in tinnitus severity (assessed by people stating that "tinnitus was no longer annoying") 30 days 2/24 (8%) with carbamazepine (150 mg three times/day for 30 days) 3/24 (13%) with placebo	Significance not assessed